초록 ▼

A combustion powered tool having a self-contained internal combustion power source constructed and arranged for creating a combustion for driving a driver blade to impact a fastener and drive it into a work piece includes a housing constructed and arranged to enclose the power source, a combustion c

A combustion powered tool having a self-contained internal combustion power source constructed and arranged for creating a combustion for driving a driver blade to impact a fastener and drive it into a work piece includes a housing constructed and arranged to enclose the power source, a combustion chamber defined at an upper end of the housing, a cylinder disposed in the housing to be in fluid communication with the combustion chamber, a piston associated with the driver blade and configured for reciprocal movement within the cylinder between a start position located at a first end of cylinder and a driving position located at a second end of the cylinder, a gas control device for periodically opening the combustion chamber to atmosphere, and a delay apparatus connected to the gas control device for delaying the opening of the combustion chamber until the piston returns to the start position after driving the fastener.

대표청구항 ▼

[ We claim:] [10.] A combustion powered fastener driving tool having a self-contained internal combustion power source and constructed and arranged for creating a combustion for driving a driver blade to impact a fastener and drive it into a work piece, comprising:a housing having a main chamber enc

[ We claim:] [10.] A combustion powered fastener driving tool having a self-contained internal combustion power source and constructed and arranged for creating a combustion for driving a driver blade to impact a fastener and drive it into a work piece, comprising:a housing having a main chamber enclosing the power source;a combustion chamber being defined within said main chamber;a cylinder within said main chamber, and a piston, said cylinder enclosing said piston to drive the driver blade toward the fastener as the piston is driven toward a second end of said cylinder, and said piston configured for reciprocal movement within said cylinder between a start position located at a first end of said cylinder and a driving position located at said second end of said cylinder;a trigger switch assembly disposed in said housing and connected to said power source for initiating combustion in said combustion chamber, said trigger switch assembly including a trigger operating between an ON position and an OFF position;a valve assembly for releasably sealing said combustion chamber from atmosphere;a lockout mechanism connected to said trigger switch assembly and said valve assembly for preventing the opening of said combustion chamber to atmosphere until said trigger is released from said ON position; anddelay means connected to said trigger switch assembly for delaying the release of said trigger from said ON position, thereby delaying the opening of said combustion chamber by said valve through said lockout mechanism until said piston returns to said start position after driving the fastener.